Jepson eFlora: Taxon page
Vascular Plants of California
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Triglochin maritima

Higher Taxonomy
Family: JuncaginaceaeView Description 
Habit: Annual, perennial herb, rhizomed or dense-tufted, terrestrial or aquatic. Leaf: generally +- basal, alternate, +- flat to narrow-cylindric; sheath open, generally liguled. Inflorescence: spike or generally +- scapose raceme; bracts 0. Flower: generally bisexual; perianth parts generally 6 in 2 whorls (0, 1) [3, 4], free, scale-like, +- green or tinged +- red-purple; stamens 0, 1, 3, or 6, filaments short, +- fused to perianth; pistil 1, carpels 1, 6 [3, 4], +- fused, separating in fruit [or not], each with 1 chamber and 1 ovule or 3 carpels fertile, 3 sterile, placentas basal, stigmas generally +- sessile. Fruit: achene or generally mericarps.
Genera In Family: 3 genera, 30 species: temperate, circumboreal, Australia, southern Africa, South America. Note: Lilaea included in Triglochin.
eFlora Treatment Author: David J. Keil
Scientific Editor: Thomas J. Rosatti.
Genus: TriglochinView DescriptionDichotomous Key

Common Name: ARROW-GRASS
Habit: Plant +- glabrous. Leaf: basal, +- tufted; sheath membranous; ligule tip entire to 2-lobed [0]. Flower: perianth parts generally adaxially concave; anthers +- sessile; stigma papillate or +- plumose. Fruit: achene or generally 3, 6 mericarps. Seed: 1, linear, +- flat or angled.
Species In Genus: +- 20 species: temperate, circumboreal, Australia, southern Africa, South America. Etymology: (Greek: 3 points, from fruits of some) Toxicity: TOXIC when fresh, from cyanogenic compounds.
Triglochin maritima L.
Habit: Perennial herb (1)4--11 dm, dense-tufted; rhizomes stout. Leaf: 1--8 dm, generally 2--5 mm wide, +- elliptic in ×-section; ligule (1)1.5--5 mm, tip entire to +- notched. Inflorescence: aerial raceme, generally > leaves; pedicels 3--6 mm in fruit, ascending. Flower: perianth parts generally 6, +- 2 mm; stamens generally 6; fertile carpels 6. Fruit: mericarps 6, 3--8 mm, fully separating, abaxially smooth or weak-ridged. Chromosomes: 2n=12,24,30,36,48,60,120,144.
Ecology: Coastal salt marshes, interior saline, brackish, alkaline marshes; Elevation: < 2800 m. Bioregional Distribution: NCo, KR, CaRH, SN, sw ScV, CCo, SnFrB, SCo, SnBr, GB; Distribution Outside California: circumboreal, South America. Flowering Time: Apr--Aug
Jepson eFlora Author: David J. Keil
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Botanical illustration including Triglochin maritima

botanical illustration including Triglochin maritima


Citation for this treatment: David J. Keil 2012, Triglochin maritima, in Jepson Flora Project (eds.) Jepson eFlora,, accessed on August 24, 2019.

Citation for the whole project: Jepson Flora Project (eds.) 2019, Jepson eFlora,, accessed on August 24, 2019.

Triglochin maritima
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© 2008 Steve Matson
Triglochin maritima
click for enlargement
© 2008 Steve Matson
Triglochin maritima
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© 2011 Vernon Smith
Triglochin maritima
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© 2006 Aaron Schusteff
Triglochin maritima
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© 2015 Barry Breckling
Triglochin maritima
click for enlargement
© 2009 Barry Breckling

More photos of Triglochin maritima in CalPhotos

Geographic subdivisions for Triglochin maritima:
NCo, KR, CaRH, SN, sw ScV, CCo, SnFrB, SCo, SnBr, GB
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map of distribution 1
(Note: any qualifiers in the taxon distribution description, such as 'northern', 'southern', 'adjacent' etc., are not reflected in the map above, and in some cases indication of a taxon in a subdivision is based on a single collection or author-verified occurence).


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Data provided by the participants of the  Consortium of California Herbaria.
View all CCH records
All markers link to CCH specimen records. The original determination is shown in the popup window.
Blue markers indicate specimens that map to one of the expected Jepson geographic subdivisions (see left map). Purple markers indicate specimens collected from a garden, greenhouse, or other non-wild location.
Yellow markers indicate records that may provide evidence for eFlora range revision or may have georeferencing or identification issues.

CCH collections by month

Duplicates counted once; synonyms included.
Species do not include records of infraspecific taxa, if there are more than 1 infraspecific taxon in CA.
Blue line denotes eFlora flowering time.